Method for use in an optimization of a non-invasive blood pressure measurement device

Inactive Publication Date: 2019-05-09
EDWARDS LIFESCIENCES CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0020]The non-invasive blood pressure measurement device may comprise at least two blood pressure measurement tools, wherein a first blood pressure measurement tool may be configured for optimization of a non-invasive blood pressure measurement device, and wherein a second blood pressure measurement tool may be configured to measure blood pressure, preferably also during optimizatio

Problems solved by technology

However, increasing gain or decreasing gain beyond a particular safety zone can cause the system to become unstable, since an increase in signal also increases

Method used

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  • Method for use in an optimization of a non-invasive blood pressure measurement device
  • Method for use in an optimization of a non-invasive blood pressure measurement device

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Embodiment Construction

[0024]FIG. 1 schematically shows a device 1 for non-invasive blood pressure measurements according to the prior art, comprising a pressure cuff 2, which generates a signal 3, the plethysmogram, based on the detected light. This signal 3, representative for the volume of blood in the finger 4 is compared to a set-point 5 by a comparator 6, which comparison is then communicated to a servo controller 7. Based on the information, the servo controller 7 in turn controls a control valve 8. The valve 8 regulates the pressure supplied to the pressure cuff 2 by a pump 9. The pressure supplied to the pressure cuff 2 is measured by a transducer 10. The present invention may be used with a similar device for non-invasive blood pressure measurements, but with an improved method.

[0025]FIG. 2A schematically shows a modelled relation between blood pressure related parameter (in this case pulse pressure) and a servo setting (in this case gain) at a first configuration, or first match. The gain of th...

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PUM

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Abstract

The invention relates to an improved method for use in a optimization of a non-invasive blood pressure measurement device. The invention thereto provides a method for use in a optimization of a non-invasive blood pressure measurement device, comprising the steps of a) measuring a blood pressure related parameter with a non-invasive blood pressure measurement device, which device comprises at least one servo controller in a first configuration; b) changing the settings, in particular the gain, of the servo controller; c) monitoring the change of the blood pressure related parameter under the influence of the changing settings of the servo controller; d) determining a match between the servo controller configuration and the body part being measured based on the monitoring of the change of the blood pressure related parameter and e) adjusting the servo controller so that it matches the physiological characteristics of the measured body part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Application No. 62 / 582,160, filed Nov. 6, 2017, the contents of which are incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]The present invention relates to method for use in an optimization of a non-invasive blood pressure measurement device.BACKGROUND OF THE INVENTION[0003]It has been known for several years how to measure non-invasive blood pressure waveform continuously wherein a pressure cuff is placed around a body extremity, such as a finger. EP 0 048 060 for instance describes that the pressure of a fluid inside the cuff is controlled on the basis of a signal of a plethysmograph by a pressure valve, in turn controlled by a servo control feedback loop.[0004]The signal of the plethysmograph is representing the volume of blood inside the blood vessels of the finger under the cuff. The more blood, the more light from a light source of the plethysmograph is absorb...

Claims

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Application Information

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IPC IPC(8): A61B5/0225A61B5/021A61B5/00A61B5/0235A61B5/022
CPCA61B5/02255A61B5/02108A61B5/7278A61B5/0235A61B5/02241A61B5/022A61B5/7225A61B2560/0223
Inventor SCHRAA, OLAFVAN GOUDOEVER, JEROEN
Owner EDWARDS LIFESCIENCES CORP
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